Toward secure internet of things via hybrid forwarding and opportunistic relaying

The vast inter-connectivity of devices in the Internet of Things (IoT) under wireless environments facilitates information exchange, but challenges network security. In this paper, we propose a novel scheme for secure cooperative communication by hybrid forwarding and opportunistic selection in IOT. A closed form expression for the tight approximation of the secrecy outage probability (SOP) is derived. An asymptotic intercept probability analysis is also conducted to evaluate the diversity order performance of proposed relay selection scheme. The derivations are confirmed through Monte Carlo simulations. Simulation results also demonstrate that proposed hybrid forwarding scheme outperforms the AF and DF forwarding scheme in terms of secrecy outage performance.